{"id":"CVE-2026-124448","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-124448","summary":"OpenEMR before 8.3.0 contains a stored cross-site scripting vulnerability in the CCDA/CCD preview stylesheets, where cda.xsl copies event-handler attributes whose values evade a character…","details":"OpenEMR before 8.3.0 contains a stored cross-site scripting vulnerability in the CCDA/CCD preview stylesheets, where cda.xsl copies event-handler attributes whose values evade a character denylist and ccd.xsl copies table-cell attributes unsanitized into preview HTML. Authenticated users can upload a crafted CCDA/CCD document with onmouseover, onclick, or onfocus handlers to execute script in a clinician's session when previewed.","published":"2026-11-08T14:18:11.960","modified":"2026-11-08T14:18:11.960","cvss":{"score":7.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/openemr/openemr/security/advisories/GHSA-rghp-vwvf-c2r9"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/openemr-before-8.3.0-stored-xss-via-ccda-ccd-preview-xslt-attributes"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-08T14:18:11.960"}}